Saw another Redditor post something similar. I also joined two shoe cabinets (Bissa) and attached a stained wood board on top. I love the way it turned out! : r/ikeahacks
IKEA BISSA shoe cabinet with 2 compartments white (49x28x93 cm) | eBay
85 Best IKEA Shoe Cabinet Hacks To Try - DigsDigs
BISSA Shoe cabinet with 3 compartment, black-brown, 49x28x135 cm (191/4x11x531/8") - IKEA CA